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arXiv 2203.01609cond-mat.stat-mechcond-mat.softphysics.chem-ph
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在单列扩散的稠密和稀疏极限中示踪剂位置的大偏差

Large deviations of a tracer position in the dense and the dilute limits of a single-file diffusion

Jagannath Rana, Tridib Sadhu

摘要:

我们应用宏观涨落理论分析了扩散单列系统中示踪剂在稠密极限和稀疏极限下的位置的长时间统计。我们明确的结果是关于相应的大偏差函数的初始步骤密度分布的波动(退火)和固定(淬火)的初始条件。这些流体动力学的结果是适用于一个一般的单列系统,他们证实了最近的精确结果所获得的微观解决方案,为特定的模型系统。

英文摘要:

We apply the macroscopic fluctuation theory to analyze the long-time statistics of the position of a tracer in the dense and the dilute limits of diffusive single-file systems. Our explicit results are about the corresponding large deviation functions for an initial step density profile with the fluctuating (annealed) and the fixed (quenched) initial conditions. These hydrodynamic results are applicable for a general single-file system and they confirm recent exact results obtained by microscopic solutions for specific model systems.

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